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α-In2Se3 wideband optical modulator for pulsed fiber lasers.
Peiguang Yan ,
Zike Jiang ,
Hao Chen ,
Jinde Yin ,
Jintao Lai ,
Jinzhang Wang ,
Tingchao He ,
Junbo Yang
Sep 15 2018
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Abstract
With the magnetron-sputtering deposition method, α phase indium selenide (α-In2Se3) was developed into a saturable absorber (SA) with wideband saturable absorption property at 800, 1560, and 1930 nm. After inserting the α-In2Se3 SA into erbium-doped fiber laser (EDFL) and thulium-doped fiber laser (TDFL) systems, we can easily obtain stable soliton pulse trains. The pulse duration/pulse energy/slope efficiency for EDFL and TDFL were 276 fs/2.03 nJ/15.8% and 1.02 ps/7.1 nJ/23.5%, respectively. These results showed that the MSD-grown α-In2Se3 could be regarded as high efficiency material to be applied in ultrafast photonics.